Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Placing concrete in rand shaft
Description of "octopus" device, evolved to speed up distribution and placing of concrete in No. 5 shaft at Van Dyk Mines; principle of octopus is being adapted by Union Corp to speed up work at No. 4 vertical shaft at St Helens, in Free State.
Placing concrete in rand shaft
Description of "octopus" device, evolved to speed up distribution and placing of concrete in No. 5 shaft at Van Dyk Mines; principle of octopus is being adapted by Union Corp to speed up work at No. 4 vertical shaft at St Helens, in Free State.
Placing concrete in rand shaft
Min Mag
Mining Magazine ; 77
1947
3 pages
Aufsatz (Zeitschrift)
Englisch
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